A full body shot from a side view of a graceful mermaid swimming elegantly through a bright, shimmering seabed. The mermaid possesses long, fluffy curly hair in reddish-purple with black streaks, and elegant fin-like ears reminiscent of a betta fish. Her upper body is adorned in a sheer, see-through garment with delicate frills, and a pair of matching betta-fish-inspired fins emerge symmetrically from her back. From the V-line of her waist down, she has a long, flowing fish tail meticulously detailed to resemble the ornate, billowing fins of a betta fish, swirling through the water. She is captured in a fluid, dancing motion, gliding through an underwater environment filled with glowing coral, floating flower motifs, and sparkling bubbles. The image is rendered in a shojo manga style with delicate lineart and the use of screentone, featuring a soft focus, light and airy color palette, and abundant sparkle effects that create a dreamy, ethereal atmosphere.